/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Ackermann04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:17:22,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:17:22,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:17:22,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:17:22,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:17:22,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:17:22,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:17:22,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:17:22,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:17:22,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:17:22,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:17:22,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:17:22,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:17:22,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:17:22,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:17:22,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:17:22,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:17:22,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:17:22,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:17:22,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:17:22,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:17:22,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:17:22,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:17:22,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:17:22,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-21 10:17:22,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:17:22,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:17:22,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:17:22,982 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:17:23,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:17:23,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:17:23,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:17:23,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:17:23,013 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:17:23,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:17:23,014 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:17:23,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:17:23,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:17:23,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:17:23,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:17:23,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:17:23,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:17:23,015 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:17:23,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:17:23,015 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:17:23,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:17:23,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:17:23,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:17:23,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:17:23,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:17:23,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:17:23,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:17:23,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:17:23,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:17:23,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:17:23,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:17:23,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:17:23,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:17:23,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:17:23,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:17:23,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:17:23,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:17:23,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:17:23,526 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:17:23,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-21 10:17:23,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b67c8e9/05f98bf2562e41ccb38b55667227d11f/FLAG815c8bc06 [2020-09-21 10:17:24,105 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:17:24,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Ackermann04.c [2020-09-21 10:17:24,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b67c8e9/05f98bf2562e41ccb38b55667227d11f/FLAG815c8bc06 [2020-09-21 10:17:24,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b67c8e9/05f98bf2562e41ccb38b55667227d11f [2020-09-21 10:17:24,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:17:24,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:17:24,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:17:24,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:17:24,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:17:24,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:17:24" (1/1) ... [2020-09-21 10:17:24,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24, skipping insertion in model container [2020-09-21 10:17:24,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:17:24" (1/1) ... [2020-09-21 10:17:24,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:17:24,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:17:24,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:17:24,780 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:17:24,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:17:24,813 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:17:24,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24 WrapperNode [2020-09-21 10:17:24,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:17:24,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:17:24,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:17:24,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:17:24,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24" (1/1) ... [2020-09-21 10:17:24,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24" (1/1) ... [2020-09-21 10:17:24,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24" (1/1) ... [2020-09-21 10:17:24,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24" (1/1) ... [2020-09-21 10:17:24,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24" (1/1) ... [2020-09-21 10:17:24,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24" (1/1) ... [2020-09-21 10:17:24,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24" (1/1) ... [2020-09-21 10:17:24,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:17:24,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:17:24,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:17:24,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:17:24,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:17:25,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:17:25,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:17:25,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2020-09-21 10:17:25,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:17:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:17:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:17:25,016 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2020-09-21 10:17:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:17:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:17:25,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:17:25,258 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:17:25,259 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 10:17:25,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:17:25 BoogieIcfgContainer [2020-09-21 10:17:25,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:17:25,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:17:25,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:17:25,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:17:25,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:17:24" (1/3) ... [2020-09-21 10:17:25,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60184532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:17:25, skipping insertion in model container [2020-09-21 10:17:25,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:17:24" (2/3) ... [2020-09-21 10:17:25,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60184532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:17:25, skipping insertion in model container [2020-09-21 10:17:25,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:17:25" (3/3) ... [2020-09-21 10:17:25,275 INFO L109 eAbstractionObserver]: Analyzing ICFG Ackermann04.c [2020-09-21 10:17:25,290 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:17:25,302 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:17:25,325 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:17:25,358 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:17:25,359 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:17:25,359 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:17:25,359 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:17:25,359 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:17:25,359 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:17:25,360 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:17:25,360 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:17:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-21 10:17:25,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 10:17:25,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:25,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:25,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:25,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:25,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1796234678, now seen corresponding path program 1 times [2020-09-21 10:17:25,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:25,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802811821] [2020-09-21 10:17:25,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:25,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:25,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:17:25,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802811821] [2020-09-21 10:17:25,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:17:25,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:17:25,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595829960] [2020-09-21 10:17:25,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:17:25,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:25,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:17:25,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:17:25,753 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-21 10:17:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:25,913 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2020-09-21 10:17:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:17:25,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-21 10:17:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:25,930 INFO L225 Difference]: With dead ends: 55 [2020-09-21 10:17:25,931 INFO L226 Difference]: Without dead ends: 28 [2020-09-21 10:17:25,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:17:25,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-21 10:17:25,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-21 10:17:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-21 10:17:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-09-21 10:17:26,000 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2020-09-21 10:17:26,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:26,001 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-09-21 10:17:26,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:17:26,001 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-09-21 10:17:26,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 10:17:26,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:26,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:26,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:17:26,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:26,006 INFO L82 PathProgramCache]: Analyzing trace with hash -895156504, now seen corresponding path program 1 times [2020-09-21 10:17:26,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:26,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890394662] [2020-09-21 10:17:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 10:17:26,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890394662] [2020-09-21 10:17:26,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:26,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 10:17:26,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598943773] [2020-09-21 10:17:26,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:17:26,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:26,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:17:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:17:26,166 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-09-21 10:17:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:26,386 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2020-09-21 10:17:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:17:26,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-09-21 10:17:26,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:26,391 INFO L225 Difference]: With dead ends: 43 [2020-09-21 10:17:26,391 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 10:17:26,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:17:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 10:17:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-21 10:17:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 10:17:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2020-09-21 10:17:26,423 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 22 [2020-09-21 10:17:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:26,424 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2020-09-21 10:17:26,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:17:26,425 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2020-09-21 10:17:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 10:17:26,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:26,431 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:26,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:17:26,432 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:26,433 INFO L82 PathProgramCache]: Analyzing trace with hash 687949058, now seen corresponding path program 2 times [2020-09-21 10:17:26,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:26,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013707191] [2020-09-21 10:17:26,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:26,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 10:17:26,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013707191] [2020-09-21 10:17:26,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:26,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-21 10:17:26,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340326696] [2020-09-21 10:17:26,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:17:26,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:26,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:17:26,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:17:26,550 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand 4 states. [2020-09-21 10:17:26,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:26,617 INFO L93 Difference]: Finished difference Result 74 states and 133 transitions. [2020-09-21 10:17:26,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 10:17:26,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-21 10:17:26,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:26,621 INFO L225 Difference]: With dead ends: 74 [2020-09-21 10:17:26,622 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 10:17:26,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:17:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 10:17:26,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-21 10:17:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 10:17:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 66 transitions. [2020-09-21 10:17:26,639 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 66 transitions. Word has length 29 [2020-09-21 10:17:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:26,640 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 66 transitions. [2020-09-21 10:17:26,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:17:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 66 transitions. [2020-09-21 10:17:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 10:17:26,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:26,644 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:26,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:17:26,644 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:26,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1711672813, now seen corresponding path program 1 times [2020-09-21 10:17:26,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:26,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154914980] [2020-09-21 10:17:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-21 10:17:26,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154914980] [2020-09-21 10:17:26,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:26,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 10:17:26,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116016866] [2020-09-21 10:17:26,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:17:26,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:26,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:17:26,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:17:26,826 INFO L87 Difference]: Start difference. First operand 43 states and 66 transitions. Second operand 5 states. [2020-09-21 10:17:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:26,915 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2020-09-21 10:17:26,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:17:26,916 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-21 10:17:26,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:26,918 INFO L225 Difference]: With dead ends: 47 [2020-09-21 10:17:26,918 INFO L226 Difference]: Without dead ends: 43 [2020-09-21 10:17:26,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:17:26,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-21 10:17:26,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-21 10:17:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 10:17:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 65 transitions. [2020-09-21 10:17:26,931 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 65 transitions. Word has length 42 [2020-09-21 10:17:26,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:26,932 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 65 transitions. [2020-09-21 10:17:26,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:17:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 65 transitions. [2020-09-21 10:17:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-21 10:17:26,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:26,936 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:26,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:17:26,936 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:26,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:26,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1732137516, now seen corresponding path program 2 times [2020-09-21 10:17:26,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:26,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125799585] [2020-09-21 10:17:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:27,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:27,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:27,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:27,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:27,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:27,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:27,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:17:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 54 proven. 29 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-21 10:17:27,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125799585] [2020-09-21 10:17:27,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:27,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 10:17:27,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307494750] [2020-09-21 10:17:27,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 10:17:27,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:27,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 10:17:27,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:17:27,384 INFO L87 Difference]: Start difference. First operand 43 states and 65 transitions. Second operand 14 states. [2020-09-21 10:17:28,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:28,350 INFO L93 Difference]: Finished difference Result 166 states and 476 transitions. [2020-09-21 10:17:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-21 10:17:28,351 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-09-21 10:17:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:28,370 INFO L225 Difference]: With dead ends: 166 [2020-09-21 10:17:28,371 INFO L226 Difference]: Without dead ends: 131 [2020-09-21 10:17:28,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=990, Unknown=0, NotChecked=0, Total=1260 [2020-09-21 10:17:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-21 10:17:28,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 69. [2020-09-21 10:17:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-21 10:17:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 133 transitions. [2020-09-21 10:17:28,440 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 133 transitions. Word has length 62 [2020-09-21 10:17:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:28,441 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 133 transitions. [2020-09-21 10:17:28,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 10:17:28,441 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 133 transitions. [2020-09-21 10:17:28,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-09-21 10:17:28,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:28,447 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:28,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:17:28,447 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:28,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:28,448 INFO L82 PathProgramCache]: Analyzing trace with hash -599460358, now seen corresponding path program 3 times [2020-09-21 10:17:28,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:28,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431811111] [2020-09-21 10:17:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:17:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:17:28,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 36 proven. 62 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-09-21 10:17:28,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431811111] [2020-09-21 10:17:28,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:28,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 10:17:28,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882418129] [2020-09-21 10:17:28,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:17:28,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:28,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:17:28,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:17:28,662 INFO L87 Difference]: Start difference. First operand 69 states and 133 transitions. Second operand 6 states. [2020-09-21 10:17:28,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:28,772 INFO L93 Difference]: Finished difference Result 113 states and 272 transitions. [2020-09-21 10:17:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:17:28,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-09-21 10:17:28,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:28,777 INFO L225 Difference]: With dead ends: 113 [2020-09-21 10:17:28,777 INFO L226 Difference]: Without dead ends: 109 [2020-09-21 10:17:28,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:17:28,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-21 10:17:28,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-09-21 10:17:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-21 10:17:28,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 267 transitions. [2020-09-21 10:17:28,808 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 267 transitions. Word has length 95 [2020-09-21 10:17:28,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:28,811 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 267 transitions. [2020-09-21 10:17:28,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:17:28,812 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 267 transitions. [2020-09-21 10:17:28,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-21 10:17:28,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:28,820 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 19, 12, 11, 11, 11, 11, 11, 11, 11, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:28,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:17:28,820 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:28,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:28,821 INFO L82 PathProgramCache]: Analyzing trace with hash 93748169, now seen corresponding path program 4 times [2020-09-21 10:17:28,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:28,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479483170] [2020-09-21 10:17:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:28,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:17:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 10:17:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:17:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:17:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:17:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-21 10:17:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:17:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2307 backedges. 349 proven. 666 refuted. 0 times theorem prover too weak. 1292 trivial. 0 not checked. [2020-09-21 10:17:29,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479483170] [2020-09-21 10:17:29,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:29,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 10:17:29,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770977325] [2020-09-21 10:17:29,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:17:29,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:29,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:17:29,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:17:29,764 INFO L87 Difference]: Start difference. First operand 109 states and 267 transitions. Second operand 9 states. [2020-09-21 10:17:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:29,979 INFO L93 Difference]: Finished difference Result 199 states and 592 transitions. [2020-09-21 10:17:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:17:29,980 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2020-09-21 10:17:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:29,983 INFO L225 Difference]: With dead ends: 199 [2020-09-21 10:17:29,984 INFO L226 Difference]: Without dead ends: 98 [2020-09-21 10:17:29,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:17:29,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-21 10:17:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-09-21 10:17:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-21 10:17:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 177 transitions. [2020-09-21 10:17:30,005 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 177 transitions. Word has length 214 [2020-09-21 10:17:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:30,006 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 177 transitions. [2020-09-21 10:17:30,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:17:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 177 transitions. [2020-09-21 10:17:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-21 10:17:30,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:30,009 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:30,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:17:30,009 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:30,010 INFO L82 PathProgramCache]: Analyzing trace with hash -2010206023, now seen corresponding path program 5 times [2020-09-21 10:17:30,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:30,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686535388] [2020-09-21 10:17:30,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:30,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:17:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-21 10:17:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 163 proven. 147 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-09-21 10:17:30,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686535388] [2020-09-21 10:17:30,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:30,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 10:17:30,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764123445] [2020-09-21 10:17:30,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 10:17:30,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:30,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 10:17:30,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:17:30,426 INFO L87 Difference]: Start difference. First operand 98 states and 177 transitions. Second operand 16 states. [2020-09-21 10:17:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:31,348 INFO L93 Difference]: Finished difference Result 254 states and 664 transitions. [2020-09-21 10:17:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-21 10:17:31,349 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-09-21 10:17:31,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:31,353 INFO L225 Difference]: With dead ends: 254 [2020-09-21 10:17:31,354 INFO L226 Difference]: Without dead ends: 164 [2020-09-21 10:17:31,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=382, Invalid=1424, Unknown=0, NotChecked=0, Total=1806 [2020-09-21 10:17:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-21 10:17:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 110. [2020-09-21 10:17:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-21 10:17:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 191 transitions. [2020-09-21 10:17:31,392 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 191 transitions. Word has length 108 [2020-09-21 10:17:31,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:31,394 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 191 transitions. [2020-09-21 10:17:31,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 10:17:31,394 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 191 transitions. [2020-09-21 10:17:31,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-21 10:17:31,398 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:31,398 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:31,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:17:31,399 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:31,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:31,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1835077495, now seen corresponding path program 6 times [2020-09-21 10:17:31,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:31,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532902269] [2020-09-21 10:17:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:17:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 10:17:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 10:17:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 10:17:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 153 proven. 289 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-09-21 10:17:31,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532902269] [2020-09-21 10:17:31,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:31,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-21 10:17:31,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527597725] [2020-09-21 10:17:31,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-21 10:17:31,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:31,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-21 10:17:31,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-09-21 10:17:31,987 INFO L87 Difference]: Start difference. First operand 110 states and 191 transitions. Second operand 16 states. [2020-09-21 10:17:33,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:33,092 INFO L93 Difference]: Finished difference Result 298 states and 723 transitions. [2020-09-21 10:17:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-21 10:17:33,092 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2020-09-21 10:17:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:33,098 INFO L225 Difference]: With dead ends: 298 [2020-09-21 10:17:33,099 INFO L226 Difference]: Without dead ends: 187 [2020-09-21 10:17:33,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2020-09-21 10:17:33,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-21 10:17:33,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 132. [2020-09-21 10:17:33,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-21 10:17:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 233 transitions. [2020-09-21 10:17:33,140 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 233 transitions. Word has length 134 [2020-09-21 10:17:33,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:33,141 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 233 transitions. [2020-09-21 10:17:33,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-21 10:17:33,141 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 233 transitions. [2020-09-21 10:17:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-21 10:17:33,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:33,146 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:33,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:17:33,146 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:33,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:33,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1434361927, now seen corresponding path program 7 times [2020-09-21 10:17:33,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:33,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569297664] [2020-09-21 10:17:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:17:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 10:17:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:17:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-21 10:17:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 10:17:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:17:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 446 proven. 274 refuted. 0 times theorem prover too weak. 526 trivial. 0 not checked. [2020-09-21 10:17:33,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569297664] [2020-09-21 10:17:33,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:33,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-21 10:17:33,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523704874] [2020-09-21 10:17:33,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-21 10:17:33,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:33,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-21 10:17:33,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-09-21 10:17:33,949 INFO L87 Difference]: Start difference. First operand 132 states and 233 transitions. Second operand 22 states. [2020-09-21 10:17:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:36,786 INFO L93 Difference]: Finished difference Result 397 states and 989 transitions. [2020-09-21 10:17:36,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-09-21 10:17:36,796 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 160 [2020-09-21 10:17:36,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:36,807 INFO L225 Difference]: With dead ends: 397 [2020-09-21 10:17:36,807 INFO L226 Difference]: Without dead ends: 273 [2020-09-21 10:17:36,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1975 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1232, Invalid=6078, Unknown=0, NotChecked=0, Total=7310 [2020-09-21 10:17:36,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-21 10:17:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 167. [2020-09-21 10:17:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-21 10:17:36,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 326 transitions. [2020-09-21 10:17:36,860 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 326 transitions. Word has length 160 [2020-09-21 10:17:36,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:36,861 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 326 transitions. [2020-09-21 10:17:36,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-21 10:17:36,861 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 326 transitions. [2020-09-21 10:17:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-21 10:17:36,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:36,866 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:36,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:17:36,866 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:36,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:36,867 INFO L82 PathProgramCache]: Analyzing trace with hash -66876812, now seen corresponding path program 8 times [2020-09-21 10:17:36,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:36,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510020897] [2020-09-21 10:17:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:36,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:36,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:17:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 10:17:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:17:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-21 10:17:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 10:17:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:17:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 10:17:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 503 proven. 360 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2020-09-21 10:17:37,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510020897] [2020-09-21 10:17:37,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:37,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-21 10:17:37,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185601344] [2020-09-21 10:17:37,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-21 10:17:37,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:37,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-21 10:17:37,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2020-09-21 10:17:37,642 INFO L87 Difference]: Start difference. First operand 167 states and 326 transitions. Second operand 23 states. [2020-09-21 10:17:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:40,385 INFO L93 Difference]: Finished difference Result 464 states and 1249 transitions. [2020-09-21 10:17:40,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-09-21 10:17:40,386 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 173 [2020-09-21 10:17:40,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:40,397 INFO L225 Difference]: With dead ends: 464 [2020-09-21 10:17:40,398 INFO L226 Difference]: Without dead ends: 305 [2020-09-21 10:17:40,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1399, Invalid=6973, Unknown=0, NotChecked=0, Total=8372 [2020-09-21 10:17:40,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-09-21 10:17:40,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 199. [2020-09-21 10:17:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-21 10:17:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 415 transitions. [2020-09-21 10:17:40,449 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 415 transitions. Word has length 173 [2020-09-21 10:17:40,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:40,450 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 415 transitions. [2020-09-21 10:17:40,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-21 10:17:40,450 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 415 transitions. [2020-09-21 10:17:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-21 10:17:40,455 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:17:40,456 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:17:40,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:17:40,456 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:17:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:17:40,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1028004289, now seen corresponding path program 9 times [2020-09-21 10:17:40,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:17:40,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393072008] [2020-09-21 10:17:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:17:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:17:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:17:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:17:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 10:17:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:17:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-09-21 10:17:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:40,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:41,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:41,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:41,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 10:17:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:41,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:17:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 10:17:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:41,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 10:17:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:41,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 10:17:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:41,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-21 10:17:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:17:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 686 proven. 70 refuted. 0 times theorem prover too weak. 985 trivial. 0 not checked. [2020-09-21 10:17:41,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393072008] [2020-09-21 10:17:41,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 10:17:41,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-21 10:17:41,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845704846] [2020-09-21 10:17:41,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-21 10:17:41,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:17:41,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-21 10:17:41,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2020-09-21 10:17:41,342 INFO L87 Difference]: Start difference. First operand 199 states and 415 transitions. Second operand 25 states. [2020-09-21 10:17:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:17:43,220 INFO L93 Difference]: Finished difference Result 342 states and 714 transitions. [2020-09-21 10:17:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-21 10:17:43,221 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 186 [2020-09-21 10:17:43,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:17:43,225 INFO L225 Difference]: With dead ends: 342 [2020-09-21 10:17:43,225 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:17:43,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=869, Invalid=3687, Unknown=0, NotChecked=0, Total=4556 [2020-09-21 10:17:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:17:43,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:17:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:17:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:17:43,236 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 186 [2020-09-21 10:17:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:17:43,236 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:17:43,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-21 10:17:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:17:43,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:17:43,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 10:17:43,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:17:44,133 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:44,394 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:45,183 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:45,544 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:45,740 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:45,965 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:46,181 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:46,350 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:46,591 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:46,801 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:47,007 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:47,213 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:47,419 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:47,917 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:48,085 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:48,252 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:48,431 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:48,665 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:48,851 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:49,060 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:49,233 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:49,486 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-09-21 10:17:49,760 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-09-21 10:17:49,942 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:50,169 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:50,337 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:50,515 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:50,795 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-09-21 10:17:51,036 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-09-21 10:17:51,279 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-09-21 10:17:51,520 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-09-21 10:17:51,761 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-09-21 10:17:52,001 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-09-21 10:17:52,550 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 77 [2020-09-21 10:17:52,791 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 86 [2020-09-21 10:17:53,193 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 98 [2020-09-21 10:17:53,426 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 86 [2020-09-21 10:17:53,573 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2020-09-21 10:17:53,718 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-09-21 10:17:53,937 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 89 [2020-09-21 10:17:54,081 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-09-21 10:17:54,300 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 89 [2020-09-21 10:17:54,477 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2020-09-21 10:17:54,662 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2020-09-21 10:17:54,826 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 57 [2020-09-21 10:17:55,006 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-09-21 10:17:55,317 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 97 [2020-09-21 10:17:55,528 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-09-21 10:17:55,810 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 92 [2020-09-21 10:17:56,035 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2020-09-21 10:17:56,267 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2020-09-21 10:17:56,473 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:56,677 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:56,855 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2020-09-21 10:17:57,032 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2020-09-21 10:17:57,361 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:57,567 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:57,707 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 57 [2020-09-21 10:17:57,996 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2020-09-21 10:17:58,211 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2020-09-21 10:17:58,410 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2020-09-21 10:17:58,716 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:58,941 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:59,109 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:59,315 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:59,521 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2020-09-21 10:17:59,786 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:17:59,954 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2020-09-21 10:18:00,151 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 57 [2020-09-21 10:18:00,584 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 104 [2020-09-21 10:18:01,325 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 10 [2020-09-21 10:18:04,334 WARN L193 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 342 DAG size of output: 47 [2020-09-21 10:18:04,553 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 11 [2020-09-21 10:18:04,602 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 10:18:04,602 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:18:04,602 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:18:04,602 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 10:18:04,602 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 10:18:04,603 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:18:04,603 INFO L268 CegarLoopResult]: For program point ackermannEXIT(lines 14 22) no Hoare annotation was computed. [2020-09-21 10:18:04,603 INFO L271 CegarLoopResult]: At program point ackermannENTRY(lines 14 22) the Hoare annotation is: true [2020-09-21 10:18:04,603 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (not (= ackermann_~m 0)) (= ackermann_~m |ackermann_#in~m|) (= ackermann_~n |ackermann_#in~n|)) [2020-09-21 10:18:04,603 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-21 10:18:04,603 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= |ackermann_#in~n| 0) (not (= ackermann_~m 0)) (= ackermann_~n |ackermann_#in~n|) (= ackermann_~m |ackermann_#in~m|)) [2020-09-21 10:18:04,604 INFO L264 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (let ((.cse7 (<= |ackermann_#in~n| 1)) (.cse1 (<= 4 |ackermann_#t~ret1|)) (.cse5 (<= |ackermann_#in~n| 2)) (.cse6 (<= 6 |ackermann_#t~ret1|)) (.cse0 (not (= ackermann_~m 0))) (.cse8 (<= 5 |ackermann_#t~ret1|)) (.cse2 (<= ackermann_~m 1)) (.cse4 (<= 3 |ackermann_#t~ret1|)) (.cse3 (= ackermann_~m |ackermann_#in~m|))) (and (or (= |ackermann_#in~n| 1) (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5) .cse6 (and (<= 2 |ackermann_#res|) .cse7)) (or .cse7 (<= |ackermann_#in~m| 1) (and .cse8 (<= |ackermann_#in~m| 2)) .cse6) (let ((.cse9 (= ackermann_~n |ackermann_#in~n|))) (or (and (<= |ackermann_#in~n| 3) .cse0 .cse1 .cse2 .cse9 .cse3) (and .cse0 .cse5 .cse9) (and .cse6 .cse0 .cse9) (and .cse0 .cse8 .cse9 (<= |ackermann_#in~n| 4)))) (or (and (<= 2 |ackermann_#t~ret1|) .cse2 .cse3) (and .cse4 .cse3)))) [2020-09-21 10:18:04,604 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-09-21 10:18:04,604 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-21 10:18:04,604 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-21 10:18:04,604 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-09-21 10:18:04,604 INFO L268 CegarLoopResult]: For program point ackermannFINAL(lines 14 22) no Hoare annotation was computed. [2020-09-21 10:18:04,605 INFO L268 CegarLoopResult]: For program point L33(lines 33 38) no Hoare annotation was computed. [2020-09-21 10:18:04,605 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-09-21 10:18:04,605 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 45) the Hoare annotation is: true [2020-09-21 10:18:04,605 INFO L268 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-09-21 10:18:04,605 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 45) no Hoare annotation was computed. [2020-09-21 10:18:04,605 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 45) no Hoare annotation was computed. [2020-09-21 10:18:04,605 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-21 10:18:04,606 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-09-21 10:18:04,606 INFO L271 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: true [2020-09-21 10:18:04,606 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-09-21 10:18:04,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:18:04 BoogieIcfgContainer [2020-09-21 10:18:04,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:18:04,616 INFO L168 Benchmark]: Toolchain (without parser) took 40164.20 ms. Allocated memory was 138.9 MB in the beginning and 589.8 MB in the end (delta: 450.9 MB). Free memory was 102.2 MB in the beginning and 542.8 MB in the end (delta: -440.6 MB). Peak memory consumption was 469.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:18:04,616 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 10:18:04,617 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.05 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:18:04,618 INFO L168 Benchmark]: Boogie Preprocessor took 41.71 ms. Allocated memory is still 138.9 MB. Free memory was 92.1 MB in the beginning and 90.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:18:04,618 INFO L168 Benchmark]: RCFGBuilder took 408.45 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.6 MB in the beginning and 166.9 MB in the end (delta: -76.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:18:04,619 INFO L168 Benchmark]: TraceAbstraction took 39347.34 ms. Allocated memory was 201.3 MB in the beginning and 589.8 MB in the end (delta: 388.5 MB). Free memory was 166.9 MB in the beginning and 542.8 MB in the end (delta: -375.9 MB). Peak memory consumption was 472.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:18:04,622 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.05 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.71 ms. Allocated memory is still 138.9 MB. Free memory was 92.1 MB in the beginning and 90.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 408.45 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.6 MB in the beginning and 166.9 MB in the end (delta: -76.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39347.34 ms. Allocated memory was 201.3 MB in the beginning and 589.8 MB in the end (delta: 388.5 MB). Free memory was 166.9 MB in the beginning and 542.8 MB in the end (delta: -375.9 MB). Peak memory consumption was 472.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.8s, OverallIterations: 12, TraceHistogramMax: 31, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 21.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 327 SDtfs, 288 SDslu, 1318 SDs, 0 SdLazy, 4278 SolverSat, 1203 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 816 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6208 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 383 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 825 PreInvPairs, 2911 NumberOfFragments, 159 HoareAnnotationTreeSize, 825 FomulaSimplifications, 2616823 FormulaSimplificationTreeSizeReduction, 17.8s HoareSimplificationTime, 9 FomulaSimplificationsInter, 62963 FormulaSimplificationTreeSizeReductionInter, 3.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 1240 NumberOfCodeBlocks, 1240 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1228 ConstructedInterpolants, 0 QuantifiedInterpolants, 315418 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 1 PerfectInterpolantSequences, 6785/8692 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...